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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <button type="button" id="large" class="btn btn-default btn-sm" data-mode="large">Large</button>
<button type="button" id="large" class="btn btn-default btn-sm" data-mode="medium">Medium</button>
<button type="button" id="small" class="btn btn-default btn-sm" data-mode="small">Small</button>

<div class="header">
  <div class="logo">
    <!-- 3kb SVG -->
    <svg viewBox="0 0 525.672 265.545">
      <path id="Mark" fill="#FFFFFF" d="M212.952,21.162l120.943,120.932h-51.106c0,0-88.332-88.342-95.39-95.392
        c-7.042-7.062-16.292-10.588-25.532-10.588c-9.238,0-18.501,3.525-25.551,10.588c-7.044,7.05-10.576,16.294-10.576,25.54
        s3.519,18.489,10.576,25.539c7.05,7.062,16.287,10.575,25.532,10.575c9.259,0,18.509-3.513,25.551-10.575l12.778,12.782
        l12.774,12.771c-14.11,14.086-32.595,21.149-51.104,21.149c-18.482,0-36.974-7.063-51.072-21.149
        C96.682,109.22,89.62,90.731,89.62,72.227c0-18.475,7.062-36.965,21.156-51.065C124.875,7.05,143.366,0,161.849,0
        C180.357,0,198.842,7.05,212.952,21.162 M299.317,5.358c-3.524-3.537-8.148-5.292-12.769-5.292c-4.637,0-9.247,1.755-12.785,5.292
        c-3.524,3.525-5.293,8.148-5.293,12.77c0,4.623,1.769,9.232,5.293,12.757l111.198,111.209h51.09L299.317,5.358z"/>
      <path id="Logotype" fill="#FFFFFF" d="M0,240.533v-0.156c0-13.828,10.354-25.164,25.081-25.164c8.967,0,14.396,3.139,19.057,7.594
        l-5.5,6.303c-3.887-3.619-8.071-6.033-13.616-6.033c-9.308,0-16.049,7.646-16.049,17.172v0.129c0,9.533,6.742,17.316,16.049,17.316
        c5.966,0,9.794-2.441,13.964-6.326l5.495,5.549c-5.067,5.297-10.625,8.629-19.743,8.629C10.561,265.545,0,254.492,0,240.533
         M84.204,215.705h7.928l21.401,49.014h-9.025l-4.94-11.752H76.56l-5.002,11.752h-8.761L84.204,215.705z M96.437,245.4l-8.418-19.471
        L79.691,245.4H96.437z M133.043,257.617l5.132-6.121c4.662,4.041,9.322,6.34,15.377,6.34c5.274,0,8.605-2.43,8.605-6.121v-0.129
        c0-3.5-1.938-5.373-10.981-7.438c-10.355-2.52-16.192-5.566-16.192-14.537v-0.143c0-8.34,6.948-14.104,16.619-14.104
        c7.088,0,12.717,2.146,17.65,6.109l-4.584,6.469c-4.377-3.279-8.768-4.996-13.209-4.996c-5.003,0-7.929,2.543-7.929,5.758v0.145
        c0,3.756,2.222,5.408,11.546,7.627c10.275,2.506,15.635,6.186,15.635,14.268v0.129c0,9.105-7.154,14.525-17.367,14.525
        C145.897,265.398,138.878,262.832,133.043,257.617 M199.938,216.053h36.082v7.643h-27.527v12.656h24.39v7.643h-24.39v13.076h27.87
        v7.648h-36.425V216.053z M290.277,216.053h9.116l14.797,23.021l14.811-23.021h9.103v48.666h-8.545v-34.914L314.19,252.76h-0.283
        l-15.223-22.789v34.748h-8.407V216.053z M382.906,215.705h7.928l21.409,49.014h-9.04l-4.931-11.752H375.25l-4.983,11.752h-8.769
        L382.906,215.705z M395.135,245.4l-8.407-19.471l-8.34,19.471H395.135z M440.353,223.98h-15.431v-7.928h39.497v7.928h-15.441v40.738
        h-8.625V223.98z M489.248,216.053h36.088v7.643h-27.538v12.656h24.403v7.643h-24.403v13.076h27.874v7.648h-36.424V216.053z
         M267.037,235.719h-9.516v9.527h9.516V235.719z"/>
    </svg>
  </div>
</div>
            
          
!

CSS

            
              // [mode] attribute selection for demo purposes
// use media queries in production

.header {
  background: #000;
  height: 40px;
  
  &[mode='medium'] {
    height: 80px;
  }
  
  &[mode='large'] {
    height: 120px;
  }
}

.logo {
  height: 20px;
  width: 50px;
  
  [mode='medium'] & {
    height: 40px;
    width: 259px;
  }
  
  [mode='large'] & {
    height: 70px;
    width: 139px;
  }
}

#Logotype {
	[mode='small'] & {
		opacity: 0;
	}

	[mode='medium'] & {
		transform: scale(2.42) translate(0, -207px);
	}

	[mode='large'] & {
		transform: scale(1);
	}
}

#Mark {
	[mode='small'] & {
		transform: translate(-89px);
	}

	[mode='medium'] & {
		transform: translate(1266px);
	}
  
	[mode='large'] & {
		transform: translate(0);
	}
}
            
          
!

JS

            
              var header     = document.querySelector('.header');
var logoSVG    = document.querySelector('.logo svg');
var viewbox    = logoSVG.getBBox();
var logoWidth  = Math.floor(viewbox.width * 1000) / 1000;
var logoHeight = Math.floor(viewbox.height * 1000) / 1000;

// values from Illustrator's info panel
var logoWidthMd  = 1702;
var logoHeightMd = 145;
var logoWidthSm  = 347;
var logoHeightSm = 145;

// setMode for demo purposes, use media queries in production
var setMode = function(mode) {
  header.setAttribute('mode', mode);
};

// setViewbox for matching viewBox to new size of paths
var setViewbox = function(w, h) {
  logoSVG.setAttribute('viewBox', '0 0 ' + w + ' ' + h);
}

// update logo size when crossing breakpoints
enquire
  .register("screen and (max-width: 499px)", function() {
    setViewbox(logoWidthSm, logoHeight);
    setMode('small');
  })
  .register("screen and (min-width: 500px)", function() {
    setViewbox(logoWidthMd, logoHeight);
    setMode('medium');
  })
  .register("screen and (min-width: 700px)", function() {
    setViewbox(logoWidth, logoHeight);
    setMode('large');
  });

// ==============================
// boilerplate demo code...
// ==============================
document.addEventListener('click', function(e) {
  if (e.target.type !== 'button') return;

  var mode = e.target.getAttribute('data-mode');
  setMode(mode);
  
  if (mode == 'small') {
    setViewbox(logoWidthSm, logoHeightSm);
  } else if (mode == 'medium') {
    setViewbox(logoWidthMd, logoHeightMd);
  } else {
    setViewbox(logoWidth, logoHeight);
  }
});
            
          
!
999px

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